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The Witch's Broom - HaOiiiRGB

Mr_42tr0nomy

By Mr_42tr0nomy
in Imaging - Deep Sky

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Mr_42tr0nomy

Mr_42tr0nomy

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Greetings!

 

I spent most of last month imaging the Witch's Broom Nebula through my 10" Newtonian. The filaments are simply incredible. The tough thing about this target is getting enough data. The Oiii and Ha both have separate structures so you cant just use the HA as luminance and your OIII and Sii as color data.. with emissio nebulae, one would just achieve good color with all three channels first and then overlay it with their Ha data to create a nice, clean image to hide the 2hrs of Oiii and Sii data haha! This was not the case.

I was only able to grab about 7-8 hrs per channel (Ha / Oiii) which is half of what I would have liked to capture. I did grab 1hr each for RGB stars using 30s sub exposures.. These turned out to be a nice touch. Nothing better, in my opinion, than RGB stars with some Ha and Oiii data!

 

I hope you all enjoy!

 

Equipment:

10" f/3.9 newt

asi533mm

Cem60

Astrodon Ha/Oiii/RGB 3nm filters

600s subs

 

 

 

 

Final image 2.jpg

Edited by Mr_42tr0nomy
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MartinB

MartinB

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I was only able to grab about 7-8 hrs per channel 🤣 - a sure sign you aren't from the UK.  That amount of data could take you a few years!

A wonderful image patiently captured and beautifully processed.  Great work!

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Mr_42tr0nomy

Mr_42tr0nomy

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On 31/08/2022 at 11:02, R1k said:

Would you be able to provide some insight into your denoise workflow?

I used topaz as well as photoshop to denoise (not sharpen) the starless HOO image.. then I proceeded to add stars. If I would have been able to capture the amount of data that I wanted to capture, I likely wouldnt have run a denoise process

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Mr_42tr0nomy

Mr_42tr0nomy

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5 hours ago, Adam J said:

Spectacular image! The 533mm working really well here. Not sure you needed 600s subs though at F3.9, what gain did you use?

Thank you! I was shooting at unity here.. I really just default to 600s subs regardless of scope to be honest haha. Seems to work well and my 600s subs have always looked a bit smoother than my 300s subs. 

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Mr_42tr0nomy

Mr_42tr0nomy

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17 hours ago, Sunshine said:

FAKE!! 🤣 kidding, i mean its so beautifully done it looks pained or rendered, this is absolutely gorgeous. I'm not an imager but I can say I haven't seen this sort of contrast and detail before, amazing.

HA! I'm sure some think its fake. I know this isnt the most NATURAL looking image of course.. but Thank you for the kind words! 

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Mr_42tr0nomy

Mr_42tr0nomy

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On 13/09/2022 at 19:42, Xiga said:

Love this. The level of detail is insane. The resolution of the big scope being put to good use here. Very nice processing too. Great work! 

Thank you! After imaging with a Newtonian for the past three years, my refractors have been collecting dust haha

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